No Boundaries for Quantum Cosmology

Where is the observer in the universe? In the fourth part of their discussion, Jim Hartle and Bernard Carr discuss Jim Hartle’s no-boundary proposal.

They explain how the proposal accounts for the quantum state of the universe as a whole, and how we find observers like us in a wholly quantum world. This discussion was conducted at the Denys Wilkinson Building, Oxford, on October 18, 2016.

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How fragile is our world? What physics led to the existence of life, and how likely --or unlikely-- were these conditions to come about? In this video series we assemble top researchers and approach this question for all angles, with a strong focus on the physics involved. Our talks accessibly discuss how the laws of physics, the initial conditions of the universe, and features of our local world work together to produce the sort of medium-scale world we live in, and assess how likely this...